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Compact, Convenient, Affordable
The AD131 is a computer controlled data acquisition device for photodiode detectors, covering a wide wavelength range with Si, InGaAs, PbS, and PbSe photocells from the AD4x series. The unit contains an internal programmable charge integration amplifier, a 16-bit A/D converter, and a microprocessor with a USB2.0 interface. Signal processing functions take place internal to the AD131 to greatly reduce the noise level of the measured signal, including Correlated Double Sampling (CDS) and signal oversampling for digital filtering. Windows® based software allows for stand-alone operation or integrated control and data acquisition with any of the Digikröm line of monochromators.
Adding the AD131-TC Thermoelectric Controller module to the AD131 enables the use of AD4x series heads with cooling capability (designated by a "-C" on the model name). AD4x heads are easily exchanged on the same AD131 unit.
Adding the AD131-TC Thermoelectric Controller module to the AD131 enables the use of AD4x series heads with cooling capability (designated by a "-C" on the model name). AD4x heads are easily exchanged on the same AD131 unit.
SP Part #
AD421
AD427*
AD429*
AD430
AD431
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Detector Type
Si
PbS
PbSe
InGaAs
Si/InGaAs
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Size
5.8x5.8
3x3
3x3
3 dia
2.4x2.4
1 dia
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Range
190-1000
1000-2900
1500-4800
800-1700
300-1700
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Temp
25°C
25°C
25°C
25°C
25°C
25°C
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Sensitivity
0.4 A/W at 720 nm
5x104 V/W at 2200 nm
5x102 at 4 µm
0.95 A/W at 1.55 µm
0.45 A/W at 0.94 µm
0.55 A/W at 1.55 µm
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Dark resistance or current
20 pA
0.5 to 2.5 MΩ
0.3 to 1.5 MΩ
15 nA
30 pA
1 nA
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The following require the AD131-TC Thermoelectric Controller module in addition to the AD131 Photodetector module
SP Part #
AD427-C*
AD429-C*
AD430-C
AD431-C
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Detector Type
Cooled PbS
Cooled PbSe
Cooled InGaAs
Cooled Si/InGaAs
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Size
4x5
3x3
3 dia
2.4x2.4
1 dia
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Range
1000-2900
1500-4800
800-1700
300-1700
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Temp
-10°C
-10°C
-10°C
25°C
-10°C
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Sensitivity
8x104 V/W at 2.2µm
1x103 V/W at 4 µm
0.95 A/W at 1.55 µm
0.45 (25°C) at 0.94 µm
0.55 at 1.55 µm
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Dark resistance or current
0.5 tp 10 MΩ
1.7 to 7 MΩ
1 nA
30 pA
0.07 nA
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Feature
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Value
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Wavelength Range:
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Depends on Sensor type
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A/D Resolution:
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16 bit
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A/D Conversion Rate:
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500kSPS
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Response Rate:
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USB 2.0
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Time Constant:
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10µS, 100µS, 1mS, 10mS (selectable)
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Low Pass Filter:
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1/3Hz, 1Hz, 10Hz, 100Hz (selectable)
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Phase Shift:
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0-180 degrees (selectable)
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Amplification Gain:
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x1 to x10 (selectable)
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Phase Lock Loop Voltage Input:
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0-5V optical chopper reference signal
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Trigger Input Voltage:
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0-5Vdc TTL
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Supply Voltage:
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100-240 Vac
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USB2.0 Transfer Rate:
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480 Mbits/S
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Software:
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Windows® control program for stand-alone use or integrated with SP Monochromators.
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If you need more information about this item, please call 505-343-9700 x100 or email [email protected]